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A  |  B  |  C  |  D  |  E  |  F  |  G  |  H  |  I  |  J  |  K  |  L  |  M  |  N  |  O  |  P  |  Q  |  R  |  S  |  T  |  U  |  V  |  W  |  X  |  Y  |  Z



  The number of blocks in the formatted input data (N, A, P).
NIST SP 800-38C

  An integer that is less than or equal to 32, whose value is the bit length of the agreed-upon binary encoding of a counter i used as input during invocations of the PRF employed by a KDF.
NIST SP 800-108r1